Forum Discussion

Tonaco_pt's avatar
Tonaco_pt
Moderator
2 years ago

Elasticsearch - Upgrade Question

Hello all, I'm about to upgrade a EV 14.1.2 to 14.4. And I have some question about the new Index engine Elasticsearch: We have 3 EV Servers with all roles (4 node cluster). Can I have 3 Index ...
Elasticsearch
  • jack_liu's avatar
    jack_liu
    2 years ago
    • Can I have 3 Index server (Elasticsearch)?  -> Yes
    • What is the size that I need for indexes?
      • 9% of 83 TB (Total Mailbox information archive) that aproximate 8Tb  -> Take the size of the original data
      • 9% of 20 TB (Total size of archive) that aproximate 2TB
    • Need an extra disk of 16/4 TB for snapshot? -> Depends on how many snapshots you are going to keep. Refer to https://www.veritas.com/support/en_US/article.100055104 
GertjanA's avatar
GertjanA
Moderator

Hello Tonaco,

I have no experience with EV14/ElasticSearch, but...

You can run indexing on an 'all-in-one', or on a specific indexing server. If you want to use the 3 servers, that can be done. Indexes are 'balanced', if correct making sure as first that the index is on the server where the archive is. I have seen a document describing the way indexes are balanced, but am unable to locate it at the moment. Perhaps your SE can provide it.

As for Index size, this should be in one of the guides. If I am correct there is a performance guide, which describes somewhere what the indexsize will be and how to calculate, but it should be for the whole archived data (=83TB)

About snapshot, I do not know.

 

Tonaco_pt's avatar
Tonaco_pt
Moderator
2 years ago

Hi  Gertjan,

Thank you for your help.

I have 3 EV index servers (14.1, velocity), I want to upgrade to 14.4 I don't know if it will work similarly balancing the archives indexes.

 

I'll plan the upgrade assuming that need three 4TB Location for indexes, and three 8TB disk for snapshot. We have 12000 archive that why I have 3 indexes servers.